<!-- echarts图表组件 -->
<!-- 文档地址 https://echarts.apache.org/examples/zh/index.html#chart-type-line -->
<script src="https://cdn.bootcdn.net/ajax/libs/echarts/4.8.0/echarts.min.js"></script>


<!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
<div id="main" style="width: 100%;height:400px;"></div>

<script type="text/javascript">
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));

    // 指定图表的配置项和数据
    var data = [
        [[28604,77,17096869,'Australia',1990],[31163,77.4,27662440,'Canada',1990],[1516,68,1154605773,'China',1990],[13670,74.7,10582082,'Cuba',1990],[28599,75,4986705,'Finland',1990],[29476,77.1,56943299,'France',1990],[31476,75.4,78958237,'Germany',1990],[28666,78.1,254830,'Iceland',1990],[1777,57.7,870601776,'India',1990],[29550,79.1,122249285,'Japan',1990],[2076,67.9,20194354,'North Korea',1990],[12087,72,42972254,'South Korea',1990],[24021,75.4,3397534,'New Zealand',1990],[43296,76.8,4240375,'Norway',1990],[10088,70.8,38195258,'Poland',1990],[19349,69.6,147568552,'Russia',1990],[10670,67.3,53994605,'Turkey',1990],[26424,75.7,57110117,'United Kingdom',1990],[37062,75.4,252847810,'United States',1990]],
        [[44056,81.8,23968973,'Australia',2015],[43294,81.7,35939927,'Canada',2015],[13334,76.9,1376048943,'China',2015],[21291,78.5,11389562,'Cuba',2015],[38923,80.8,5503457,'Finland',2015],[37599,81.9,64395345,'France',2015],[44053,81.1,80688545,'Germany',2015],[42182,82.8,329425,'Iceland',2015],[5903,66.8,1311050527,'India',2015],[36162,83.5,126573481,'Japan',2015],[1390,71.4,25155317,'North Korea',2015],[34644,80.7,50293439,'South Korea',2015],[34186,80.6,4528526,'New Zealand',2015],[64304,81.6,5210967,'Norway',2015],[24787,77.3,38611794,'Poland',2015],[23038,73.13,143456918,'Russia',2015],[19360,76.5,78665830,'Turkey',2015],[38225,81.4,64715810,'United Kingdom',2015],[53354,79.1,321773631,'United States',2015]]
    ];

    option = {
        backgroundColor: new echarts.graphic.RadialGradient(0.3, 0.3, 0.8, [{
            offset: 0,
            color: '#f7f8fa'
        }, {
            offset: 1,
            color: '#cdd0d5'
        }]),
        title: {
            text: '1990 与 2015 年各国家人均寿命与 GDP'
        },
        legend: {
            right: 10,
            data: ['1990', '2015']
        },
        xAxis: {
            splitLine: {
                lineStyle: {
                    type: 'dashed'
                }
            }
        },
        yAxis: {
            splitLine: {
                lineStyle: {
                    type: 'dashed'
                }
            },
            scale: true
        },
        series: [{
            name: '1990',
            data: data[0],
            type: 'scatter',
            symbolSize: function (data) {
                return Math.sqrt(data[2]) / 5e2;
            },
            emphasis: {
                label: {
                    show: true,
                    formatter: function (param) {
                        return param.data[3];
                    },
                    position: 'top'
                }
            },
            itemStyle: {
                shadowBlur: 10,
                shadowColor: 'rgba(120, 36, 50, 0.5)',
                shadowOffsetY: 5,
                color: new echarts.graphic.RadialGradient(0.4, 0.3, 1, [{
                    offset: 0,
                    color: 'rgb(251, 118, 123)'
                }, {
                    offset: 1,
                    color: 'rgb(204, 46, 72)'
                }])
            }
        }, {
            name: '2015',
            data: data[1],
            type: 'scatter',
            symbolSize: function (data) {
                return Math.sqrt(data[2]) / 5e2;
            },
            emphasis: {
                label: {
                    show: true,
                    formatter: function (param) {
                        return param.data[3];
                    },
                    position: 'top'
                }
            },
            itemStyle: {
                shadowBlur: 10,
                shadowColor: 'rgba(25, 100, 150, 0.5)',
                shadowOffsetY: 5,
                color: new echarts.graphic.RadialGradient(0.4, 0.3, 1, [{
                    offset: 0,
                    color: 'rgb(129, 227, 238)'
                }, {
                    offset: 1,
                    color: 'rgb(25, 183, 207)'
                }])
            }
        }]
    };

    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(option);
</script>